Home / 7,790.54-11,685.75-1,947.11

Finding the Fourth Proportional to 7,790.54, 11,685.75 and 1,947.11

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Solution

The fourth proportional to 7,790.54, 11,685.75 and 1,947.11 is: 2,920.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,790.54 : 11,685.75 = 1,947.11 : x
  2. Step 2: Convert to fraction form
    7,790.54/11,685.75 = 1,947.11/x
  3. Step 3: Cross multiply
    7,790.54x = 11,685.75 × 1,947.11
  4. Step 4: Simplify right side
    7,790.54x = 22,753,440.68
  5. Step 5: Solve for x
    x = 22,753,440.68/7,790.54
  6. Step 6: Final answer
    x = 2,920.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.